Control line

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Control line is a method of aeromodeling where the model aircraft is connected to the operator by a pair of lines. These lines control the aircraft's elevator, allowing the operator to maneuver the aircraft by changing its pitch. Control line flying is a popular form of model aviation and is often seen in competitions and exhibitions.

History

Control line flying dates back to the early 20th century. The first recorded instance of control line flying was in the 1930s. The method gained popularity after World War II when model aircraft technology advanced significantly.

Mechanics

In control line flying, the model aircraft is tethered to the operator by two lines, typically made of steel or braided wire. These lines are attached to a handle held by the operator. By moving the handle, the operator can control the aircraft's elevator, which in turn changes the aircraft's pitch. This allows for a variety of maneuvers, including loops, dives, and level flight.

Types of Control Line Models

There are several types of control line models, each designed for different purposes:

• Stunt models: Designed for performing aerobatic maneuvers.
• Combat models: Used in competitive events where pilots attempt to cut their opponent's streamers.
• Racing models: Built for speed and used in racing competitions.
• Scale models: Replicas of real aircraft, often judged on their appearance and realism.

Competitions

Control line flying is a competitive sport with various events and categories. Some of the most popular competitions include:

• F2A Speed: Focuses on achieving the highest speed.
• F2B Aerobatics: Involves performing a series of prescribed maneuvers.
• F2C Team Racing: Teams compete to complete a set number of laps in the shortest time.
• F2D Combat: Pilots attempt to cut their opponent's streamer while avoiding their own being cut.

Safety

Safety is a crucial aspect of control line flying. Operators must ensure that the flying area is clear of obstacles and spectators. Proper maintenance of the control lines and the aircraft is essential to prevent accidents.

Related Pages

• Model aircraft
• Aeromodeling
• Radio-controlled aircraft
• Free flight (model aircraft)
• Aerobatics

See Also

• Model aviation
• Aircraft control surfaces
• Flight dynamics

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